/Engine/Source/Runtime/Engine/Classes/GameFramework/InputDeviceSubsystem.h
Remove a set of device properties based on their handles.
The number of removed device properties
void RemoveDevicePropertyHandles ( const [TSet](API\Runtime\Core\Containers\TSet)< [FInputDevicePropertyHandle](API\Runtime\Engine\GameFramework\FInputDevicePropertyHandle) > & HandlesToRemove )